R1R3* x X BLx x x RxR2A bar of lengthd 0.8 m is free to slide without friction on horizontal rails asshown in Figure. A uniform magnetic field B = 1.6 T is directed into the plane ofthe figure. Left ends of the rails are connected to a circuit composed ofresistances,R = 250, R2 = 10 N, and R3 = 10n, a solenoid with inductance L = 0.5 H , abattery with emf ɛ = 120 V , and a switch S. The bar has mass m =resistance R = 50. Ignore all other resistance in the circuit due to connectingwires and the rails. Just after the switch is closed, what is the accelerati on of thebar?%3D%3D100 g and83=%3DA) 38.4 m/s? B) 17.14 m/s? C) 8.4 m/s2 D) 264 m/s? E) 28 m/s2

A bar of length d = 0.8 m is free to slide without friction on horizontal rails as shown in Figure. A uniform magnetic fi eld B = 1.6 T is directed into the plane of the figure. Left ends of the rails are connected to a circuit composed ofresistances, R1 = 250, R2 = 10 N, and R3 = 102, a solenoid with inductance L = 0.5 H , a battery with emf ɛ = 120 V , and a switch S. The bar has mass m 100 g and resistance R =5N. Ignore all other resistance in the circuit due to connecting wires and the rails. Just after the switch is closed, what is the accelerati on of the bar? %3D %3D %3D %3D %3D

A bar of length d = 0.8 m is free to slide without friction on horizontal rails as shown in Figure. A uniform magnetic fi eld B = 1.6 T is directed into the plane of the figure. Left ends of the rails are connected to a circuit composed ofresistances, R1 = 250, R2 = 10 N, and R3 = 102, a solenoid with inductance L = 0.5 H , a battery with emf ɛ = 120 V , and a switch S. The bar has mass m 100 g and resistance R =5N. Ignore all other resistance in the circuit due to connecting wires and the rails. Just after the switch is closed, what is the accelerati on of the bar? %3D %3D %3D %3D %3D

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter31: Gauss’s Law For Magnetism And Ampère’s Law

Section31.4: Special Case: Linear Symmetry

Problem 31.4CE: Magnetic Field Due to a Long, Straight Wire In a laboratory, you measure the magnitude of the...

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Sketch a plot of the magnitude of the magnetic field as a function of position r for a coax (Fig. P31.27).
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